FluentValidation 9.3.0-preview3

A validation library for .NET that uses a fluent interface to construct strongly-typed validation rules.

Showing the top 20 packages that depend on FluentValidation.

Packages Downloads
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
42
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
3,637
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
37
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
38
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
41
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
42
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
43
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
47
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
50
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
689
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
3,622
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
14,095
FluentValidation.DependencyInjectionExtensions
Dependenecy injection extensions for FluentValidation
38
FluentValidation.DependencyInjectionExtensions
Dependenecy injection extensions for FluentValidation
39

FluentValidation 9 is a major release. Please read the upgrade notes at https://docs.fluentvalidation.net/en/latest/upgrading-to-9.html Changes in 9.3.0: * Improvements to LanguageManager's lazy loading of resources. * Deprecate IStringSource and its implementors. Use delegates instead. * CustomizeValidatorAttribute now works in Razor pages (netcore 3.1 and net 5.0 only) * RuleSetForClientSideMessagesAttribute now works in Razor pages (netcore 3.1 and net 5.0 only) Changes in 9.2.2: * Fix one of the inheritance validator overloads not working correctly. Changes in 9.2.1: * Add non-generic Add method to inheritance validator. * Updates to Persian translations. * Added Bengali translations. Changes in 9.2.0: * Add inheritance validator * Performance improvements Changes in 9.1.3: * Fix an issue with IncludeRulesNotInRuleSet not working correctly Changes in 9.1.2: * Make the ValidationContext.ThrowOnFailures getter public. Changes in 9.1.1: * Fix an incorrect deprecation message. Changes in 9.1: * Make ruleset separator character splitting consistent * Transform now works with RuleForEach * Introduce constants for rulesets * Resolve issue when attempting to use asynchronous conditions in a synchornous validaiton run * Added asynchronous versions of the TestHelper methods. * Introduce CascadeMode.Stop and deprecate CascadeMode.StopOnFirstFailure to resolve confusion/abiguity about setting the cascade mode at validator-level (#1437) * RaiseValidationException can be overridden to customize the exception throwing process * Add new Validate extension methods that allow options to be configured using a strategy Changes in 9.0.0: * Removed support for netstandard1.1 and netstandard1.6 * Removed support for end-of-life .NET Core versions (2.2 and 3.0). LTS versions are supported (2.1 and 3.1) * Default email validation mode now uses the same logic as ASP.NET Core. Previous regex behaviour is opt-in. * TestHelper advanced mode now has more features (see https://docs.fluentvalidation.net/en/latest/testing.html#advanced-test-extensions) * Equal/NotEqual now perform ordinal comparison when used with string properties * Severity can now be set dynamically with a callback * Removed WithLocalizedMessage (WithMessage that takes a callback is the replacement) * Removed ResourceName from ValidationFailure * Removed ResourceName and ResourceType from IStringSource. * Removed SetCollectionValidator which was deprecated in 8.0 * Additional overload of OnAnyFailure that can receive a collection of validation failures * Remove DisplayAttribute integration and reference to DataAnnotations. * ComparisonProperty placeholder is now formatted like PropertyName * Translations of default error messages into other languages are now lazily-loaded * Added Slovenian translations of default error messages. * Added Icelandic translations of default error messages. * Added WithMessageArgument to the test helpers. * Add additional overload of SetValidator that takes a Func that receives the current property value. * ASP.NET Core: FluentValidationModelValidatorProvider and FluentValidationModelValidator are now public. * Work around a bug in ASP.NET Core's integration testing components that can cause ConfigureServices to run multiple times. * SourceLink integration. * {CollectionIndex} placeholder can now be accessed in child validators. * Additional ValidationException constructor that allows using both the default message and a custom one together. * ScalePrecisionValidator algorithm now matches SQL Server. * Additional overload of the When methods that contain the validation context. * Automatically scanned types can be excluded when calling RegisterValidatorsFromAssemblyContaining in ASP.NET Core projects. * New AutomaticValidationEnabled property for use in ASP.NET Core projects (defaults to true). Full release notes can be found at https://github.com/FluentValidation/FluentValidation/blob/master/Changelog.txt

.NET Framework 4.6.1

  • No dependencies.

.NET 5.0

  • No dependencies.

.NET Standard 2.0

  • No dependencies.

Version Downloads Last updated
12.1.1 3 12/04/2025
12.1.0 6 11/07/2025
12.0.0 19 05/09/2025
12.0.0-preview1 27 01/02/2025
11.12.0 6 11/06/2025
11.11.0 32 11/27/2024
11.10.0 28 11/26/2024
11.9.2 23 12/03/2024
11.9.1 434 05/03/2024
11.9.0 35 04/20/2024
11.8.1 44 05/10/2024
11.8.0 30 05/22/2024
11.7.1 25 12/05/2024
11.7.0 27 05/15/2024
11.6.0 24 11/28/2024
11.5.2 27 06/22/2023
11.5.1 35 04/11/2023
11.5.0 28 05/18/2024
11.4.0 32 05/02/2024
11.3.0 26 12/05/2024
11.2.2 13,629 11/03/2022
11.2.1 25 12/04/2024
11.2.0 26 12/11/2024
11.1.1 21 11/16/2024
11.1.0 3,589 07/25/2022
11.0.3 24 11/14/2024
11.0.2 23 12/06/2024
11.0.1 24 12/04/2024
11.0.0 30 05/06/2024
10.3.1 25 11/30/2024
10.2.1 26 05/11/2022
10.2.0 28 12/05/2024
9.5.4 23 12/04/2024
9.4.0 32 05/26/2024
9.3.0-preview3 23 05/25/2024
9.3.0-preview2 24 05/25/2024
9.2.2 27 06/01/2024
9.2.1 18 01/04/2025
9.1.2 23 12/03/2024
9.1.1 26 12/02/2024
9.1.0 24 12/05/2024
9.0.1 25 12/04/2024
9.0.0-preview5 25 05/25/2024
9.0.0-preview3 26 05/25/2024
9.0.0-preview2 27 05/25/2024
9.0.0-preview1 27 05/25/2024
8.6.3 26 12/02/2024
8.6.2 28 11/04/2022
8.6.1 21 11/29/2024
8.5.0 30 05/16/2024
8.5.0-preview5 24 05/25/2024
8.5.0-preview3 22 05/25/2024
8.5.0-preview1 30 05/25/2024
8.3.0 24 12/06/2024
8.2.1 34 05/10/2022
8.1.2 27 12/10/2024
8.0.100 24 11/16/2024
8.0.0-rc1 25 11/16/2024
8.0.0-preview3 27 05/25/2024
7.6.104 29 05/23/2024
7.6.0-preview1 29 05/25/2024
7.5.1 25 12/04/2024
7.4.0 29 05/15/2024
7.3.2 26 05/30/2024
7.3.1 25 12/04/2024
7.3.0-beta2 21 11/28/2024
7.2.1 25 05/23/2024
7.2.0 21 12/04/2024
7.2.0-beta2 22 11/29/2024
7.1.0-beta1 24 12/12/2024
7.0.1 38 05/11/2022
7.0.0 21 12/07/2024
7.0.0-beta2 24 11/28/2024
7.0.0-beta1 23 11/17/2024
6.4.1 26 05/31/2024
6.4.1-beta1 24 12/06/2024
6.4.0-rc2 24 12/03/2024
6.4.0-rc1 24 11/24/2024
6.4.0-beta8 24 12/04/2024
6.4.0-beta7 30 11/16/2024
6.4.0-beta4 23 11/28/2024
6.4.0-beta3 29 11/14/2024
6.4.0-beta1 31 12/10/2024
6.2.1-beta1 24 12/04/2024
6.1.0 25 05/14/2024
6.0.1 25 11/14/2024
6.0.0 28 11/17/2024
5.6.2 28 05/13/2024
5.6.1 34 05/03/2024
5.3.0 30 12/11/2024
4.0.0.1 30 05/20/2024
3.0.0.1 27 05/23/2024
3.0.0 24 01/03/2025
2.0.0 36 05/08/2022